peters



@uitrit titties isrtwt @frn DANIELfW. GOLBURN, 0F LOAMI, ILLINOIS,

' Laim Patent No. 78,861, dated 'Jute 16,1863.

'IMPROVEMENT IN WRENCH.

To ALL WHOM ITMAY CONCERN;

vBe it knownithat LIDANIEL CLBURN, of Loami, county-of Sangumon, StateofIllnois, haveinvented 'anenf and useful Improvement on the Jaws. of anOrdinary Wrenchgland I do hereby declare that thefollowing isa full,clear, and exact description of the construction angl operation of thesame, reference beinghed to the accompanying rawing, andto the lettersof reference marked thereon. 4

I construct'the jaws of any ordinary wrenchso that oneA is much'longerthan the other. (In the accompanying draiing the lower jaw isconstructed longer than the up-pcr.) I make the longer jaw, A, with a.slightly concave surface, and the shorter one, B, straight The longerone, with the concave surface, is enough longer than the other so as toallow them to slide easily around the topjvithout removing the wrenchfromit.

In the ordinary wrench, with jews of equal length and square surfaces,the wrench inust always be taken olf to geta fresh grasp; Thisconstruction of `the-jaws obviutes that, and does the work-in one-fourthof the time What I claim as invention, ind desire to secure by LettersPatent, is

This improved construction of the jaws A `and B, in themanner hereinspecified, and for the purposes set forth. v Y DANIEL W. COLBURN'.

Witnesses:

W; COLLERMERD, Jos. JONES.

